The U.S. Supreme Court on 9 July declined Florida’s emergency request to reinstate Senate Bill 4-C, leaving in place a lower-court injunction that bars the state from arresting or prosecuting undocumented migrants who enter its borders. The unsigned order contained no written opinion and noted no dissents, meaning the justices allowed the April ruling by U.S. District Judge Kathleen Williams to stand while litigation continues. SB 4-C, approved by Florida’s Republican-controlled legislature and signed by Governor Ron DeSantis in February, would make unauthorized entry a state crime. First-time violators would face a minimum of nine months in jail; migrants previously deported or ordered removed could be charged with a felony carrying sentences of up to five years and mandatory pre-trial detention. Judge Williams found the measure likely unconstitutional because it intrudes on the federal government’s exclusive authority over immigration, an analysis the 11th U.S. Circuit Court of Appeals later declined to disturb. Attorney General James Uthmeier asked the Supreme Court to intervene, arguing that the law was needed to protect Floridians and complements federal statutes. Eighteen other states and the Trump administration filed briefs supporting Florida. Immigrant-rights advocates hailed the high court’s action. “States may not regulate immigration,” said Cody Wofsy, deputy director of the ACLU’s Immigrants’ Rights Project. The case now returns to the 11th Circuit for full consideration of Florida’s appeal; unless that court or the Supreme Court reverses course later, SB 4-C remains on hold.